Derivatives · Anlage KAP · verifiable
From broker export to a finished Anlage KAP. Built for active private investors.
Klyris classifies futures, options and Stillhalter premiums the way German tax law requires, and shows its work, line by line, reconciled to your broker to the cent.
Worked example: a 2.000,00 USD futures gain converted at the ECB rate 1,0800 becomes 1.851,85 EUR on Anlage KAP line 21 (Termingeschäfte), reconciled to the cent.
- Symbol
- ESM4
- Type
- Future
- Realized P/L
- +2.000,00 USD
- ECB USD/EUR
- 1,0800
- Line 19Ausländische Kapitalerträge
- Line 21Termingeschäfte1.851,85 €traced
From export to Anlage KAP in three steps
Upload your broker export
Drop in your IBKR Flex Query (XML). The file stays on your device; Klyris transmits nothing.
Klyris derives & classifies
Klyris classifies every position under German tax law and converts the amounts to euro at the ECB rate of the relevant day.
Download Anlage KAP + audit trail
You get the Anlage KAP values with their derivation as a download and transfer them into your return.
The problem
Foreign broker reports don't speak German tax law.
Interactive Brokers and other foreign brokers deliver raw data, not a tax classification. Futures, options and short-option (Stillhalter) premiums have to be classified and separated first, and by hand that is slow and error-prone.
- Separate loss-offset pots (Verlustverrechnungstöpfe) for stocks vs. derivatives.
- Stillhalter premiums and closing transactions need the correct tax treatment.
- Every foreign-currency amount must be converted at the right reference rate.
- One misclassification runs through the whole Anlage KAP.
Trades,DataDiscriminator,AssetClass,Symbol,
T,O,FUT,ESM4,2.000,00,USD,1,0800,...
T,C,OPT,AAPL 240621P,-312,50,USD,1,0791
T,C,FUT,MGCJ6,-550,74,USD,1,0791,...
CashReport,EUR,Withholding,-44,12,...
Codes,A;Ep;C Fees,-2,14 Comm,-1,00
… 4.812 more rows …Everything you get with Klyris
Each value comes with the path by which it was produced.
Import your broker data
Bring in an IBKR Flex Query (XML). More brokers are planned.
Automatic tax classification
Klyris separates the loss-offset pots, handles Stillhalter premiums, converts at the official ECB reference rates and matches by FIFO.
Ready-to-file Anlage KAP values
Get the exact figures to enter into your Anlage KAP, mapped to the right lines.
Traceable derivation
A PDF that shows the calculation behind every value. With the same engine version, the same file gives the same figures every time; the version and checksums are printed on the document. If the Finanzamt asks, you have the evidence.
Export & transfer
Export to PDF and CSV, plus a transfer sheet listing your figures line by line for Mein ELSTER.
See exactly what Klyris produces.
The same output the app produces. The totals agree with the broker's realized result, and each figure leads back to the broker row and the ECB rate it used.
Futures/options gains
1.045,98 €
Futures/options losses
-472,17 €
Deductible losses
472,17 €
| Line | Code | Description | EUR |
|---|---|---|---|
| 19 | 234/434 | Ausländische Kapitalerträge | 574,00 € |
| 22 | 235/435 | Verluste aus Termingeschäften | 472,00 € |
How a figure leads back to its position:MESM6 · sell 2026-01-02 @ 6652.25 (ECB 0,85317) → buy 2026-01-05 @ 6530 (ECB 0,85734) · +1.045,98 €
Engine klyris-engine 0.2.0 · audit trail + Steuerberater dossier, downloadable
- Your broker's realized P/L is the yardstick: Klyris reconciles against it and names any difference.
- Each position lists its broker row, the ECB reference rate and the method.
- Plus the audit trail and a Steuerberater dossier with the legal citations, which you can pass on as is.
Everything runs in your browser. Your broker data never leaves your device.
The same figures as above, as German documents for the Finanzamt and the Steuerberater.
The live preview lets you download both on the sample.
Built for active private investors in Germany
Klyris is for private investors in Germany who trade derivatives through a foreign broker, often with many transactions a year, and who want to be able to back up every figure to the Finanzamt.
Built for
- Private investors who trade futures or options
- Anyone using Interactive Brokers or another foreign broker
- People with one or several brokerage accounts (Depots)
- Investors who want a paper trail they can show the Finanzamt
Not for
- Company or fund accounts (Klyris is for private investors)
- Crypto-only portfolios
- Pure buy-and-hold ETF investors with no derivatives
- A replacement for a Steuerberater (Klyris is software, not advice)
One price per tax year
All brokerage accounts (Depots) included, no per-transaction fees.
Per tax year
249€/ tax year, all accounts (Depots) included
- All your accounts (Depots) and unlimited imports
- Automatic tax classification & FX conversion
- Ready-to-file Anlage KAP values
- PDF derivation for every position
- PDF & CSV export
Stock sales, dividends, credit interest and creditable US withholding tax are computed, not yet externally assessed. Funds (Anlage KAP-INV) are not included. Most complete for futures and options (Termingeschäfte and Stillhaltergeschäfte).
See the founding cohortThis is the price at the paid launch (planned: Herbst 2026). I am currently giving away 10 seats at no charge, for a tax year of your choice.
Founding cohort
10 seats for a tax year of your choice, at no charge
Klyris costs 249 € per tax year. I am giving the first 10 seats away at no charge. In return I would like an assessment I may quote.
What the seat covers
- Full access for the chosen tax year: Anlage KAP values, the Zeile mapping and the derivation
- Every download unlocked: the Nachweis PDF, the Finanzamt statement and the audit trail as CSV
- A direct line to me for technical questions about Klyris or the broker export
- No payment details and no renewal; there is nothing to cancel
What I am asking for in return
An honest assessment, including the uncomfortable parts: what was unclear, what was missing, and whether the reconciliation against your broker export added up for you. If you agree, I will quote from it, named or anonymous, entirely as you prefer.
You see the reconciliation yourself
You do not have to send me anything for that. The derivation reconciles every position against the result your broker states itself and names any difference. The file stays with you; I never see your figures.
I am keeping the cohort deliberately small so I can answer every question properly. Once the seats are taken, I close it.
Klyris derives figures and documents them. Filing remains your decision, and an individual case belongs with a Steuerberaterin or Steuerberater if there is any doubt.
Klyris is a software tool, not tax advice.
Where Klyris stands
The computation works and reconciles against real broker exports. What is still missing is the paid launch and everything around it. Until then you can try the live preview with your own file, or claim one of the free founding seats.
- Live previewOpen to everyone, with your own file or the sample data
- Founding cohortnow10 free seats, one tax year of your choosing
- Paid launchGeneral availability, planned for Herbst 2026
Waitlist
Be first to file with Klyris
Sign up and you will hear when the paid launch gets close or founding seats open up again. There is no other mail.